JP5925924B1 - Waterproof connector - Google Patents

Abstract

A waterproof connector capable of improving waterproofness is provided. A plurality of plate-shaped first protrusions 25 are formed on the rear surface 14A of the housing body 14 so as to protrude in the fitting direction and are arranged in parallel with the plurality of first contacts 12, respectively. The waterproof seal portion 19 is formed by filling a sealing material so as to cover the base portions of the contact 12 and the second contact 13 and the plurality of first protrusions 25. [Selection] Figure 6

Description

  The present invention relates to a waterproof connector, and more particularly to a waterproof connector in which a plurality of contacts are fixed to a housing.

In recent years, various electronic devices and the like have a high demand for a waterproof function, and accordingly, development of a waterproof connector has been promoted.
Some waterproof connectors are mounted so that the contacts pass through the housing, and contact portions of contacts exposed to the outside of the housing are brought into contact with contacts of the mating connector. This type of connector has a waterproof function. For this reason, it is indispensable to seal the contact through portion.

  For example, Patent Document 1 discloses a waterproof connector in which a plurality of contacts 3 are fixed to a partition wall 2 formed inside a cylindrical housing 1 as shown in FIG. .

The housing 1 is attached to the electronic device 4 so that a part of the housing 1 is buried in the electronic device 4. The partition wall 2 of the housing 1 is formed with a cylindrical rib 5 that surrounds the plurality of contacts 3 and protrudes toward the mating connector (not shown) in the direction of the fitting shaft.
By filling the space formed by the rib 5 and the partition wall 2 with the elastic seal member 6, the base portion of the plurality of contacts 3 penetrating the partition wall 2 and the surface of the partition wall 2 positioned between the plurality of contacts 3 are formed. The elastic seal member 6 is bonded to prevent water from entering the inside of the electronic device 4 from the outside.

JP 2014-157678 A

  However, when the mating connector is strongly pushed in when the mating connector is fitted to the connector, the elastic sealing member 6 is easily peeled off from the surface of the partition wall 2 because the partition wall 2 of the housing 1 is bent. There is a problem. Since the elastic seal member 6 is also bonded to the surface of the rib 5, it is considered that the elastic seal member 6 is reinforced by the adhesive force in the rib 5 at a position close to the rib 5. It is difficult to expect reinforcement by 5, and it is impossible to effectively prevent the elastic seal member 6 from peeling off from the partition wall 2 of the housing 1.

  Once peeling occurs, a gap is formed between the surface of the partition wall 2 and the elastic seal member 6, and water may enter the inside of the electronic device 4 through this gap and the waterproofness of the connector may be impaired. is there.

  The present invention has been made to solve such a conventional problem, and an object thereof is to provide a waterproof connector capable of improving waterproofness.

The waterproof connector according to the present invention extends in the fitting direction between the housing made of an insulating resin and the mating connector, and the front end is exposed at the front of the housing and the rear end protrudes from the back of the housing. The central portion is fixed to the housing and includes a plurality of contacts arranged in a direction crossing the fitting direction, and a waterproof seal portion disposed on the back surface of the housing. Each housing is fitted from the back surface. and projecting in a direction more of the plurality of first aligned in the arrangement direction of the contact protrusions, and has a projecting portion projecting in the fitting direction from the back at both ends of the longitudinal direction of the housing, each of the projecting portions has at least one second projection projecting toward the plurality of contacts, the waterproof seal portion protrudes from the back of the housing Root portion of the rear end portion of the number of contacts, are those formed from filled sealing material so as to cover the plurality of first projections and at least one second protrusion.

The first protrusion may have a plate shape or a rod shape extending in the fitting direction.
The housing may have a pair of substrate fixing portions that are disposed at both ends in the arrangement direction of the plurality of contacts and are fixed to the substrate .

The second protrusion may have a plate shape or a bar shape extending in the arrangement direction of the plurality of contacts.
The housing may include a sealing material mold part surrounding the plurality of first protrusions, and the waterproof sealing part may be formed of a sealing material filled in the sealing material mold part.

  According to this invention, the housing has a plurality of first protrusions that protrude from the back surface in the fitting direction and are arranged in the arrangement direction of the plurality of contacts, and the waterproof seal portion disposed on the back surface of the housing includes: Since it is formed from the sealing material filled so as to cover the base portions of the rear end portions of the plurality of contacts and the plurality of first protrusions protruding from the back surface of the housing, it is possible to improve waterproofness.

It is the perspective view which looked at the connector which concerns on Embodiment 1 of this invention from diagonally upward on the back side. 2 is a front view of the connector according to Embodiment 1. FIG. It is the perspective view which looked at the connector which concerns on Embodiment 1 except the waterproof seal part from the back diagonally upward. It is the perspective view which looked at the connector which concerns on Embodiment 1 except the waterproof seal part from the back diagonally downward. 2 is a rear sectional view of the connector according to Embodiment 1. FIG. It is the plane sectional view which cut the connector concerning Embodiment 1 with the XY plane which passes along the 1st projection. It is the plane sectional view which cut the connector concerning Embodiment 1 with the XY plane which passes along the 1st contact. 6 is a plan view of a connector according to Embodiment 2. FIG. FIG. 10 is a perspective view of a first protrusion used in the connector according to Embodiment 3. It is sectional drawing which shows the conventional connector.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
FIG. 1 is a perspective view of the connector 11 according to Embodiment 1 as viewed obliquely from the rear. The connector 11 is a receptacle connector that is fixed to a substrate in an electronic device such as a portable device and an information device, and is connected to a mating connector (not shown) that is inserted along the fitting axis C.
The connector 11 includes a housing H1, a plurality of first contacts 12 extending in the direction of the fitting axis C and arranged in a direction perpendicular to the fitting axis C, and a plurality of first contacts 12 extending in the direction of the fitting axis C. The plurality of second contacts 13 are arranged in parallel with the first contacts 12.

  Here, for convenience, the direction from the front part to the rear part of the connector 11 along the fitting axis C is the Y direction, the arrangement direction of the plurality of first contacts 12 and the plurality of second contacts 13 is the X direction, and is perpendicular to the XY plane. The direction from the second contact 13 side toward the first contact 12 side is referred to as the Z direction.

  The housing H1 is made of an insulating resin and has a housing body 14. A pair of flat plate-like substrate fixing portions 15 projecting in the X direction are formed at both ends of the housing body 14 in the X direction, and the substrate fixing holes penetrating in the Z direction are respectively formed in the pair of substrate fixing portions 15. 16 is formed. A cylindrical housing front portion 17 extending in the −Y direction along the fitting axis is formed at the −Y direction end of the housing body 14.

  The plurality of first contacts 12 and the plurality of second contacts 13 pass through the housing body 14 and are held by the housing body 14. The front end portions of the plurality of first contacts 12 and the plurality of second contacts 13 in the −Y direction protrude from the front surface portion of the housing body 14 in the −Y direction and are covered with a cylindrical housing front portion 17. Further, the rear end portions of the plurality of first contacts 12 and the plurality of second contacts 13 in the + Y direction protrude from the back surface 14 </ b> A of the housing body 14 in the + Y direction.

The housing H1 further has an overhanging portion 18 projecting in the + Y direction from the back surface 14A at the + X direction end portion and the −X direction end portion of the back surface 14A of the housing main body 14, respectively.
The overhanging portion 18 at the + X direction end of the back surface 14A of the housing main body 14 and the substrate fixing portion 15 connected to the + X direction end of the housing main body 14 are integrally formed so as to be continuous with each other. Similarly, the overhanging portion 18 at the −X direction end portion of the back surface portion of the housing main body 14 and the substrate fixing portion 15 connected to the −X direction end portion of the housing main body 14 are integrally formed so as to be continuous with each other. .

A waterproof seal portion 19 formed of a seal material is disposed on the back surface 14A of the housing body 14. Both end portions of the waterproof seal portion 19 in the X direction reach the corresponding overhang portions 18 respectively.
A ring-shaped gasket 20 is disposed on the outer peripheral portion of the cylindrical housing front portion 17 formed on the front surface portion of the housing body 14.

As shown in FIG. 2, the cylindrical housing front portion 17 extends in the Y direction so as to cover the front end portions in the −Y direction of the plurality of first contacts 12 and the plurality of second contacts 13. A cylindrical shell 21 made of metal is disposed.
An insulator 22 formed of an insulating resin is disposed inside the shell 21, and the −Y direction of each of the first contact 12 and the second contact 13 that protrudes from the front surface portion of the housing body 14 into the housing front portion 17. Is held by the insulator 22. A mid plate 23 made of metal is embedded in the insulator 22 so as to be positioned between the plurality of first contacts 12 and the plurality of second contacts 13. In addition, a pair of ground plates 24 made of metal provide the base portions of the plurality of first contacts 12 and the plurality of second contacts 13 protruding into the housing front portion 17 from the + Z direction side and the −Z direction side, respectively. It arrange | positions on the surface of the insulator 22 so that it may cover.
The mid plate 23 and the pair of ground plates 24 are electrically connected to the shell 21.

  FIG. 3 is a perspective view of the connector 11 from which the waterproof seal portion 19 is omitted, as viewed from obliquely upward on the back side. A plurality of plate-shaped first protrusions 25 that protrude in the + Y direction and extend in the Z direction are formed on the back surface 14 </ b> A of the housing body 14. The plurality of first protrusions 25 are arranged in parallel with the plurality of first contacts 12, correspond to the plurality of first contacts 12, and are disposed adjacent to the + Z direction side of the corresponding first contacts 12, respectively. ing.

The overhanging portion 18 connected to the + X direction end portion of the back surface 14A of the housing body 14 protrudes in the −X direction and extends in the Z direction so as to face the plurality of first contacts 12 and the plurality of second contacts 13 respectively. At least one second protrusion 26 having a plate shape arranged in the Y direction is formed.
Similarly, the overhanging portion 18 connected to the −X direction end portion of the rear surface portion of the housing body 14 protrudes in the + X direction so as to go to the plurality of first contacts 12 and the plurality of second contacts 13, and in the Z direction. And at least one second protrusion 26 having a plate shape arranged in the Y direction is formed.

  FIG. 4 is a perspective view of the connector 11 from which the waterproof seal portion 19 is omitted as viewed from the obliquely lower side on the back side. A plurality of plate-shaped first protrusions 27 are formed on the back surface 14A of the housing body 14 so as to protrude in the + Y direction and extend in the Z direction. The plurality of first protrusions 27 are arranged in parallel with the plurality of second contacts 13, correspond to the plurality of second contacts 13, and are arranged adjacent to the −Z direction side of the corresponding second contacts 13, respectively. Has been.

  As shown in FIG. 1, the waterproof seal portion 19 is provided between the base portions of the end portions in the + Y direction of the first contacts 12 and the second contacts 13 that protrude from the back surface 14 </ b> A of the housing body 14. The first and second protrusions 25 and 27 formed on the back surface 14A are continuously filled between the first protrusions 25 and the first protrusions 27 so that there is no gap between them. It is formed by filling the sealing material so as to cover the protrusions 25 and 27 and to cover at least one second protrusion 26 formed on each overhanging portion 18.

FIG. 5 shows a rear sectional view of the connector 11. The plurality of first protrusions 25 corresponding to the plurality of first contacts 12 are exposed in the + Z direction from the surface facing the + Z direction of the waterproof seal portion 19, and the plurality of first protrusions corresponding to the plurality of second contacts 13. The protrusion 27 is exposed in the −Z direction from the surface of the waterproof seal portion 19 facing the −Z direction.
The surface on the −Z direction side of each first protrusion 25 is in contact with the surface on the + Z direction side of the base portion of the corresponding first contact 12. Similarly, the surface on the + Z direction side of each first protrusion 27 is in contact with the surface on the −Z direction side of the base portion of the corresponding second contact 13.

As shown in FIG. 6, the waterproof seal portion 19 is in close contact with the back surface 14 </ b> A of the housing body 14, and both sides of the first protrusions 25 formed on the back surface 14 </ b> A of the housing body 14 are oriented in the X direction. The first and second projections 27 (not shown) formed on the back surface 14A of the housing main body 14 and facing the X direction and the rear end surface facing the + Y direction. Also in close contact.
Further, the waterproof seal portion 19 is also in close contact with the end surfaces of the respective second protrusions 26 formed on both projecting portions 18 facing the X direction and both side surfaces facing the Y direction.

  Further, as shown in FIG. 7, the waterproof seal portion 19 is in close contact with the surface of the base portion of each first contact 12 protruding in the + Y direction from the back surface 14 </ b> A of the housing body 14. It is also in close contact with the surface of the base portion of each second contact 13 protruding in the + Y direction from the back surface 14A.

The waterproof seal portion 19 can be molded using a waterproof seal portion molding die (not shown) arranged so as to be in contact with the back surface 14 </ b> A of the housing body 14 and the overhang portions 18. The waterproof seal portion molding die has a sealing material injection space corresponding to the waterproof seal portion 19 shown in FIG. 1 between the back surface 14A of the housing body 14 and injects the sealing material into the sealing material injection space. And the waterproof seal part 19 is shape | molded by solidifying by drying or a heating.
In addition, as a sealing material which shape | molds the waterproof seal part 19, an epoxy resin can be used, for example, What is necessary is just to inject | pour and melt the epoxy resin of a molten state in sealing material injection | pouring space. In addition to the epoxy resin, various waterproof resins and adhesives can be used. The hardness of the sealing material after solidification is not limited, and may be a hard waterproof seal portion 19 or a soft waterproof seal portion 19 as long as it is in close contact with the back surface 14A of the housing body 14. .

  The waterproof connector 11 according to the first embodiment is mounted and used on a board (not shown) by screwing using the board fixing holes 16 formed in the pair of board fixing parts 15. For this reason, when a mating connector (not shown) is fitted along the mating axis C and the mating connector is pushed in strongly, the back surface 14A of the housing body 14 uses the pair of board fixing holes 16 as fulcrums. There is a risk of bending like a bow.

However, as shown in FIG. 6, not only the back surface 14A of the housing body 14 but also the first protrusions 25 and 27 that protrude from the back surface 14A of the housing body 14 are facing both sides in the X direction. Since it is also in close contact with the surface, the bonding area is increased. Furthermore, the adhesive force on both side surfaces of the first protrusions 25 and 27 facing in the X direction is not easily affected by the bending of the back surface 14A of the housing body 14 in the Y direction. For this reason, the waterproof seal part 19 has high adhesion to the housing body 14.
Therefore, even when the back surface 14A of the housing body 14 is bent, the waterproof seal portion 19 is not peeled off from the back surface 14A of the housing body 14, and the waterproof property can be improved.

  Further, the adhesive area of the waterproof seal portion 19 is also increased on the end surface facing the X direction and the both side surfaces facing the Y direction of the respective second protrusions 26 formed on the both projecting portions 18. The adhesive force of the part 19 is reinforced. For this reason, even if a force toward the rear of the waterproof connector 11, that is, the + Y direction acts on the waterproof seal portion 19, both ends in the X direction of the waterproof seal portion 19 are prevented from being detached from the back surface 14 </ b> A of the housing body 14. Thus, waterproofness can be further improved.

As shown in FIG. 4, the rear end 21A of the shell 21 protrudes in the −Z direction from the surface of each projecting portion 18 facing the −Z direction, and the waterproof connector 11 is mounted on a substrate (not shown). In this case, the shell 21 can be set to the ground potential by connecting the rear end 21A of the shell 21 to the ground pattern of the substrate. As a result, the shell 21, the mid plate 23 electrically connected to the shell 21 and the pair of ground plates 24 can be set to the ground potential, respectively, and shielding against electromagnetic waves is achieved, while suppressing the influence of the electromagnetic waves. It becomes possible to perform signal transmission with high reliability.
Further, the plurality of first protrusions 25 are exposed in the + Z direction from the surface of the waterproof seal portion 19 facing the + Z direction, and the plurality of first protrusions 27 are exposed from the surface of the waterproof seal portion 19 facing the −Z direction− Although exposed in the Z direction, the plurality of first protrusions 25 and 27 may be buried in the waterproof seal portion 19 without being exposed.

Embodiment 2
In the first embodiment, the waterproof seal portion 19 shown in FIG. 1 is molded using a waterproof seal portion molding die (not shown) arranged so as to be in close contact with the back surface 14A of the housing main body 14 and the overhang portions 18. However, the waterproof seal portion 19 is not necessarily formed by the waterproof seal portion mold, and a sealing material mold portion may be formed in advance in the housing.

  FIG. 8 shows a connector 31 according to the second embodiment. The connector 31 uses a housing H2 having a sealing material mold portion 32 instead of the housing H1 in the connector 11 of the first embodiment shown in FIG. The housing main body 14, the pair of substrate fixing portions 15, the pair of substrate fixing holes 16, the housing front portion 17, and the pair of overhanging portions 18 of the housing H2 are the housing main body 14, 1 of the housing H1 according to the first embodiment. The pair of substrate fixing portions 15, the pair of substrate fixing holes 16, the housing front portion 17, and the pair of protruding portions 18 are the same. The plurality of first contacts 12 and the plurality of second contacts 13 included in the connector 31 are the same as the plurality of first contacts 12 and the plurality of second contacts 13 included in the connector 11 according to the first embodiment.

  The sealing material form part 32 is disposed at a position away from the rear surface 14A of the housing main body 14 by a predetermined distance in the + Y direction, and has a flat plate shape extending in the X direction and the Z direction. Both ends in the X direction of the sealing material mold part 32 are integrally connected to the corresponding overhanging parts 18 so as to be continuous with each other, and the sealing material mold part 32 is formed on the back surface 14 </ b> A of the housing body 14. The plurality of first protrusions 25 and 27 are integrally formed so as to be continuous. A sealing material filling space 33 penetrating in the Z direction is formed between the back surface 14 </ b> A of the housing body 14 and the sealing material mold part 32.

The sealing material filling space 33 is filled with the sealing material by injecting the sealing material in the −Z direction from the surface facing the + Z direction of the sealing material filling space 33 or in the + Z direction from the surface facing the −Z direction. Thus, the waterproof seal portion 19 is formed in the same manner as in the first embodiment.
The sealing material filling space 33 may not penetrate in the Z direction, and the + Z direction end or the −Z direction end may be closed.

The waterproof seal portion 19 is in close contact with not only the back surface 14A of the housing body 14 but also both side surfaces facing the X direction of the first protrusions 25 and 27 formed on the back surface 14A of the housing body 14. In addition, the adhesive strength of the waterproof seal portion 19 is increased by being in close contact with the front end surface facing the −Y direction of the sealing material mold portion 32 and increasing the adhesion area. Reinforced.
In this way, the adhesion between the waterproof seal portion 19 and the back surface 14A of the housing main body 14 is improved, and the waterproof seal portion 19 is not peeled off from the back surface 14A of the housing main body 14, thereby improving the water resistance.

  In addition, instead of the sealing material mold portion 32 along the XZ plane as shown in FIG. 8, the plurality of first contacts 12 from the + Z direction end portion and the −Z direction end portion of the back surface 14A of the housing body 14 and It is also possible to form a pair of flat plate-shaped sealing material mold sections along the XY plane so as to extend in the + Y direction and face each other in the Z direction across the plurality of second contacts 13. The waterproof seal portion 19 is formed by injecting the seal material in the −Y direction from the + Y direction toward the back surface 14 </ b> A of the housing body 14 between the pair of flat plate-shaped seal material mold portions.

Embodiment 3
In the first embodiment and the second embodiment, as shown in FIGS. 3 and 4, the plurality of first protrusions 25 and 27 have a plate shape. A rod-shaped protrusion 41 as shown in FIG. 9 can also be used.
The plurality of rod-shaped protrusions 41 are formed so as to protrude in the + Y direction from the back surface 14A of the housing body 14 (not shown) and are arranged in the X direction. Each protrusion 41 is a pair of side surfaces facing the X direction. 42 and a rear end face 43 facing the + Y direction.

  Since the waterproof seal portion 19 (not shown) is in close contact with the pair of side surfaces 42 facing the X direction of the plurality of protrusions 41, the waterproof seal portion is less affected by the bending of the rear surface 14A in the Y direction and the bonding area increases. 19 adhesive strength is reinforced.

  In this way, even when a plurality of rod-shaped protrusions 41 are used, as in the first and second embodiments, the adhesion between the waterproof seal portion 19 and the back surface 14A of the housing body 14 is improved, and waterproofing is achieved. It becomes possible to improve the property.

Similarly, at least one second protrusion 26 protruding in the X direction so as to go from the respective overhanging portion 18 toward the plurality of first contacts 12 and the plurality of second contacts 13 may be formed into a bar shape. .
In addition, although the protrusion 41 shown in FIG. 9 has a prismatic shape, it is not limited to this and can also be made into a cylindrical shape.

  In the first to third embodiments, the plurality of first contacts 12 and the plurality of second contacts 13 arranged in the X direction are arranged in two rows in the Z direction. However, the present invention is not limited to this. The present invention can also be applied to a connector in which a plurality of contacts are arranged in a row.

  In the first to third embodiments described above, the housing H1 or H2 has the pair of substrate fixing portions 15. However, the present invention is not limited to this, and instead of having the substrate fixing portion 15, for example, the shell 21 The waterproof connector 11 or 31 can also be mounted on the substrate by protruding the end of the housing from the housing H1 or H2 and fixing the protruding end to a substrate (not shown) by soldering or the like.

DESCRIPTION OF SYMBOLS 1 Housing, 2 Partition wall, 3 Contact, 4 Electronic equipment, 5 Rib, 6 Elastic seal member, 11, 31 Connector, 12 1st contact, 13 2nd contact, 14 Housing main body, 14A The back surface of the housing main body 14, 15 board | substrate Fixing part, 16 Substrate fixing hole, 17 Housing front part, 18 Overhang part, 19 Waterproof seal part, 20 Gasket, 21 Shell, 22 Insulator, 23 Mid plate, 24 Ground plate, 25, 27 First protrusion, 26 Second Projection, 32 sealing material mold part, 33 sealing material filling space, 41 projection, H1, H2 housing, C fitting shaft, X, Y, Z direction.

Claims (5)

A housing made of insulating resin;
The center part is fixed to the housing so that the front end part is exposed at the front part of the housing and the rear end part protrudes from the back surface of the housing. A plurality of contacts arranged in a direction intersecting with
A waterproof seal portion disposed on the back surface of the housing,
The housing protrudes from the back surface in the fitting direction and has a plurality of first protrusions arranged in the arrangement direction of the plurality of contacts, and the fitting from the back surface at both ends in the arrangement direction of the plurality of contacts. Has an overhanging portion that protrudes in the direction ,
Each of the overhang portions has at least one second protrusion protruding toward the plurality of contacts,
The waterproof seal portion is a seal filled so as to cover base portions of rear end portions of the plurality of contacts protruding from the back surface of the housing , the plurality of first protrusions, and the at least one second protrusion. A waterproof connector formed of a material.   The waterproof connector according to claim 1, wherein the first protrusion has a plate shape or a rod shape extending in the fitting direction.   The waterproof connector according to claim 1, wherein the housing has a pair of board fixing portions that are disposed at both ends in the arrangement direction of the plurality of contacts and are fixed to the board. The waterproof connector according to any one of claims 1 to 3, wherein the second protrusion has a plate shape or a bar shape extending in an arrangement direction of the plurality of contacts. The housing has a mold part for sealing material that surrounds the plurality of first protrusions,
The waterproof connector according to any one of claims 1 to 4 , wherein the waterproof seal portion is formed from the seal material filled in the sealing material mold portion.

Images